Cisco Systems Cisco IOS XR Manual De Usuario

To resolve most low-memory problems, you should remove the configurations from the router that are 
consuming the most memory. Often, memory problems occur when a large new configuration is added 
to the system. The following sections provide information to resolve low-memory issues:

A low-memory warning can occur when a large configuration file is loaded into a target configuration 
session. To remove the target configuration, enter the clear command to discard the changes. For 
example:

RP/0/RP0/CPU0:router(config)# clear

Committing a target configuration that has caused a low-memory warning can make the system unstable. 
Clearing a target configuration is a preventive measure to not let the system go into a worse memory state 
due to additional configuration. In addition, all other active configuration sessions can be closed to 
minimize the churn.

You can reduce memory usage by removing configurations from the router, as shown in the following 
procedure:

Physical Memory

Amount of physical memory installed on the device.

Application  Memory

Memory available for the system to use (total memory minus image size, 
reserved, IOMem, and flashfsys).

Image

Size of the bootable image.

Reserved

Reserved for packet memory.

IOMem

IO memory—Currently used as a backup for packet memory.

flashfsys

Flash file system memory.

Process and JID

Process and job ID.

Address

Starting address in memory.

Bytes

Size of memory block.

What

Block description.